Ops, typo
if(l && l.getItem(y))
f(l.getItem(y))();
else {
var $ = this.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") :
new XMLHttpRequest;
$.open("GET", y, false);
$.send(null);
$ = $.responseText;
if(l) // I would use clear here if this is the only cached script
l.setItem(y, $);
f($)();
};
})(
this.Function,
this.localStorage,
"scripts/jquery.1.3.2.min.js"
);
On Thu, Aug 20, 2009 at 7:53 PM, Andrea Giammarchi <
[email protected]> wrote:
> jQuery minified and gzipped is already light, if about 15Kb of bandwidth
> are a problem I think the main problem is the server itself.
>
> Moreover, using common and well known techniques to cache scripts could
> avoid bandwidth usage at all or thanks to Web Storage you can implement
> something like this directly in the page to avoid server calls:
>
> <script type="text/javascript">
> (function(f,l,y){
> if(l && (l = l.getItem(y)))
> f(l)(y);
> else {
> var $ = this.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") :
> new XMLHttpRequest;
> $.open("GET", y, false);
> $.send(null);
> $ = $.responseText;
> if(l)
> l.setItem(y, $);
> f($)();
> };
> })(
> this.Function,
> this.localStorage,
> "scripts/jquery.1.3.2.min.js"
> );
> </script>
>
> If you do not use localStorage.clear you can use whatever jQuery version
> until the next release sending it via gzip once for each visitor.
>
> Regards
>
>
>
>
> On Thu, Aug 20, 2009 at 4:23 PM, DBJDBJ <[email protected]> wrote:
>
>>
>> @ludovic
>>
>> If I understood you right you are supporting conditional compilation
>> idea, but done in jQuery?
>> Can you elaborate please?
>>
>> Am I right in thinking that this can lead to a very clever system,
>> that will increase every page HTTP GET time ?
>>
>> It is relatively easy to imagine and implement a little jQuery loader
>> that will load up additional needed parts, in accordance with which is
>> the browser host. Dynamic composition? Very modern term ;o)
>>
>> PSEUDO CODE :
>>
>> // at this point only minimal jQ is loaded
>> $( function () {
>> // load jQ part 1
>> if ( is_supported_X() ) $.getScript ( .... ) else $.getScript
>> ( .... ) ;
>> // load jQ part 2
>> if ( is_supported_Y() ) $.getScript ( .... ) else $.getScript
>> ( .... ) ;
>> // load jQ part 3
>> if ( is_supported_Z() ) $.getScript ( .... ) else $.getScript
>> ( .... ) ;
>> // load jQ part 4
>> if ( is_supported_W() ) $.getScript ( .... ) else $.getScript
>> ( .... ) ;
>> // and so on untill we have assembled all we need
>> })
>>
>> This could be at the bottom of the single minimal js file needed ...
>> AFAIK, Dojo, ExtJs etc ... all have a conceptually simillar mechanism
>> for dynamic and transparent addition of necessary parts.
>>
>> --DBJ
>>
>> On Aug 20, 2:32 pm, ludovic <[email protected]> wrote:
>> > Another point to add :
>> > Even if two different browsers respond to the same features detection,
>> > one browser can only correspond to one combinaison of features
>> > detection. I understand that in developpment, it is cleaner to use
>> > features detection, but there should be a compilation for most used
>> > browsers.
>> >
>> > We don't even need to make it for every browser. Just for IE 6, IE7,
>> > IE 8, FF2, FF3.0, FF3.5, Safari 3.1 and some others.
>> > If the browser doesn't correspond to one of precomputed files, it will
>> > simply download the full file as we do actually.
>> >
>> > In a certain way, it is the creation of a precompiler like //@cc_on
>> > but enhanced.
>> >
>> > Regards
>> >>
>>
>
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